BB 451 Exam 3 questions well answered
to pass graded A+
What is a nucleobase covalently linked to the C1' of a 5-carbon sugar (pentose)? -
correct answer ✔✔nucleoside
What is the name of the bond where the C1' of a pentose links to a nucleobase? -
correct answer ✔✔glycosidic bond
Where is the glycosidic bond in purines? - correct answer ✔✔N9-C1'
Where is the glycosidic bond in pyrimidines? - correct answer ✔✔N1-C1'
What are the phosphate esters of nucleosides? - correct answer ✔✔nucleotides
What does NMP stand for? - correct answer ✔✔ribonucleoside monophosphate
What does dNMP stand for? - correct answer ✔✔deoxyribonucleoside
monophosphate
What are NMPs and dNMPs covalently joined by to make RNA and DNA,
respectively? - correct answer ✔✔phosphodiester bonds
,What are long chains of nucleotides called? - correct answer ✔✔polynucleotides
What are short chains of nucleotides called? - correct answer ✔✔oligonucleotides
What nucleotide is only in DNA and how would you name it? - correct answer
✔✔Thymine (dTMP, dTDP, dTTP, TMP, TDP, TTP)
What is the three letter abbreviation for the base adenine? - correct answer
✔✔ade
What is the three letter abbreviation for the base cytosine? - correct answer
✔✔cyt
What is the three letter abbreviation for the base thymine? - correct answer
✔✔thy
What is the three letter abbreviation for the base guanine? - correct answer
✔✔gua
What is the three letter abbreviation for the base uracil? - correct answer ✔✔ura
What is the three letter abbreviation for the nucleoside adenosine? - correct
answer ✔✔ado
,What is the three letter abbreviation for the nucleoside guanosine? - correct
answer ✔✔guo
What is the three letter abbreviation for the nucleoside cytidine? - correct answer
✔✔cyd
What is the three letter abbreviation for the nucleoside uridine? - correct answer
✔✔urd
What is the three letter abbreviation for the nucleoside deoxythymidine? - correct
answer ✔✔dThd
What constantly happens to RNA? - correct answer ✔✔broken down
Why is RNA constantly being broken down? - correct answer ✔✔2' OH is unstable
What is the common form of DNA? - correct answer ✔✔B-form
How are the strands in B-form DNA oriented? - correct answer ✔✔right handed,
antiparallel
How do the strands in B-form DNA interact? - correct answer ✔✔by hydrogen
bonds between complimentary bases
How many hydrogen bonds are between G and C? - correct answer ✔✔3
, How many hydrogen bonds are between A and T? - correct answer ✔✔2
What does the angle of interaction between base pairs result in in B-form DNA? -
correct answer ✔✔major and minor grooves
What is the helix diameter in B-form DNA? - correct answer ✔✔20 angstroms
What is the helix rise in B-form DNA? - correct answer ✔✔3.4 angstroms
What is the helix pitch in B-form DNA? - correct answer ✔✔34 angstroms
How many base pairs are there per helical turn of B-form DNA? - correct answer
✔✔10
What is the tilt of base pairs from perpendicular to helix axis of B-form DNA? -
correct answer ✔✔1 degree
How is A-form D/RNA different from B-form DNA? - correct answer ✔✔base pairs
more to the side of helix
How is Z-form DNA oriented? - correct answer ✔✔left handed
What does Z-form DNA prefer? - correct answer ✔✔alternating CG base pair
sequences
to pass graded A+
What is a nucleobase covalently linked to the C1' of a 5-carbon sugar (pentose)? -
correct answer ✔✔nucleoside
What is the name of the bond where the C1' of a pentose links to a nucleobase? -
correct answer ✔✔glycosidic bond
Where is the glycosidic bond in purines? - correct answer ✔✔N9-C1'
Where is the glycosidic bond in pyrimidines? - correct answer ✔✔N1-C1'
What are the phosphate esters of nucleosides? - correct answer ✔✔nucleotides
What does NMP stand for? - correct answer ✔✔ribonucleoside monophosphate
What does dNMP stand for? - correct answer ✔✔deoxyribonucleoside
monophosphate
What are NMPs and dNMPs covalently joined by to make RNA and DNA,
respectively? - correct answer ✔✔phosphodiester bonds
,What are long chains of nucleotides called? - correct answer ✔✔polynucleotides
What are short chains of nucleotides called? - correct answer ✔✔oligonucleotides
What nucleotide is only in DNA and how would you name it? - correct answer
✔✔Thymine (dTMP, dTDP, dTTP, TMP, TDP, TTP)
What is the three letter abbreviation for the base adenine? - correct answer
✔✔ade
What is the three letter abbreviation for the base cytosine? - correct answer
✔✔cyt
What is the three letter abbreviation for the base thymine? - correct answer
✔✔thy
What is the three letter abbreviation for the base guanine? - correct answer
✔✔gua
What is the three letter abbreviation for the base uracil? - correct answer ✔✔ura
What is the three letter abbreviation for the nucleoside adenosine? - correct
answer ✔✔ado
,What is the three letter abbreviation for the nucleoside guanosine? - correct
answer ✔✔guo
What is the three letter abbreviation for the nucleoside cytidine? - correct answer
✔✔cyd
What is the three letter abbreviation for the nucleoside uridine? - correct answer
✔✔urd
What is the three letter abbreviation for the nucleoside deoxythymidine? - correct
answer ✔✔dThd
What constantly happens to RNA? - correct answer ✔✔broken down
Why is RNA constantly being broken down? - correct answer ✔✔2' OH is unstable
What is the common form of DNA? - correct answer ✔✔B-form
How are the strands in B-form DNA oriented? - correct answer ✔✔right handed,
antiparallel
How do the strands in B-form DNA interact? - correct answer ✔✔by hydrogen
bonds between complimentary bases
How many hydrogen bonds are between G and C? - correct answer ✔✔3
, How many hydrogen bonds are between A and T? - correct answer ✔✔2
What does the angle of interaction between base pairs result in in B-form DNA? -
correct answer ✔✔major and minor grooves
What is the helix diameter in B-form DNA? - correct answer ✔✔20 angstroms
What is the helix rise in B-form DNA? - correct answer ✔✔3.4 angstroms
What is the helix pitch in B-form DNA? - correct answer ✔✔34 angstroms
How many base pairs are there per helical turn of B-form DNA? - correct answer
✔✔10
What is the tilt of base pairs from perpendicular to helix axis of B-form DNA? -
correct answer ✔✔1 degree
How is A-form D/RNA different from B-form DNA? - correct answer ✔✔base pairs
more to the side of helix
How is Z-form DNA oriented? - correct answer ✔✔left handed
What does Z-form DNA prefer? - correct answer ✔✔alternating CG base pair
sequences
